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Finding the Fourth Proportional to 250,632.87, 345,891.65 and 143,200.61

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Solution

The fourth proportional to 250,632.87, 345,891.65 and 143,200.61 is: 197,627.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,632.87 : 345,891.65 = 143,200.61 : x
  2. Step 2: Convert to fraction form
    250,632.87/345,891.65 = 143,200.61/x
  3. Step 3: Cross multiply
    250,632.87x = 345,891.65 × 143,200.61
  4. Step 4: Simplify right side
    250,632.87x = 49,531,895,273.91
  5. Step 5: Solve for x
    x = 49,531,895,273.91/250,632.87
  6. Step 6: Final answer
    x = 197,627.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.